Overview
The PCA9536DRG4 is a remote 4-bit I2C and SMBus I/O expander produced by Texas Instruments. This device is designed to provide general-purpose remote I/O expansion for most microcontroller families through the I2C interface. It operates within a voltage range of 2.3-V to 5.5-V VCC, making it versatile for various applications. The PCA9536DRG4 features configuration registers that allow for input or output selection, input port, output port, and polarity inversion, enabling flexible control over the I/O pins. At power-on, the I/Os are configured as inputs with weak pull-ups to VCC, and the system controller can configure them as either inputs or outputs by writing to the I/O configuration register bits.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 8-SOIC (0.154", 3.90mm), VSSOP (8) 3.00 mm × 3.00 mm |
| VCC Operating Range | 2.3 V to 5.5 V |
| Operating Temperature Range | -40°C to 85°C |
| Standby Current Consumption | 1 μA Max |
| I/O Configuration | 4-bit (input or output selection) |
| Interface | I2C and SMBus |
| Output Drive Capability | High-current drive for directly driving LEDs |
Key Features
- Available in Texas Instruments NanoFree™ package
- Low standby current consumption of 1 μA Max
- I2C to parallel port expander for remote I/O expansion
- Configuration registers for input or output selection, input port, output port, and polarity inversion
- High-current drive capability for directly driving LEDs
- Internal pull-up resistors for I/O pins at power-on
- Power-on reset feature to initialize the I2C/SMBus state machine
Applications
The PCA9536DRG4 is suitable for a variety of applications requiring remote I/O expansion, including:
- Microcontroller-based systems
- Industrial control systems
- Automotive systems
- Consumer electronics
- LED lighting and display systems
Q & A
- What is the PCA9536DRG4?
The PCA9536DRG4 is a remote 4-bit I2C and SMBus I/O expander produced by Texas Instruments. - What is the operating voltage range of the PCA9536DRG4?
The PCA9536DRG4 operates within a voltage range of 2.3-V to 5.5-V VCC. - What types of packages are available for the PCA9536DRG4?
The PCA9536DRG4 is available in 8-SOIC (0.154", 3.90mm) and VSSOP (8) 3.00 mm × 3.00 mm packages. - What is the standby current consumption of the PCA9536DRG4?
The standby current consumption is 1 μA Max. - How are the I/O pins configured at power-on?
At power-on, the I/O pins are configured as inputs with weak pull-ups to VCC. - Can the polarity of the input port be inverted?
Yes, the polarity of the input port can be inverted using the Polarity Inversion register. - What is the output drive capability of the PCA9536DRG4?
The device outputs have high-current drive capability for directly driving LEDs. - What interface does the PCA9536DRG4 use?
The PCA9536DRG4 uses the I2C and SMBus interface. - What is the operating temperature range of the PCA9536DRG4?
The operating temperature range is -40°C to 85°C. - How does the power-on reset feature work?
The power-on reset feature initializes the I2C/SMBus state machine and sets the registers to their default state.
